Wire stitching machine



Jun. 16, 1940. J PAGUARUL 2,187,522

WIRE STITCHING CHINE Filed Jan. 11, 1938 2 Sheets-Sheet 1 INVENTOR.

Jan 16, 1940. J. N. PAGLIARUL WIRE STITCHING. MACHINE Filed Jan. 11,1938 2 Sheets-Sheet 2 INVENTOR.

Patented Jan. 16, 1940 UNITED STATES PATENT, OFFICE WIRE STITCHINGMACHDNE Joseph Pagliarul, Milwaukee, Wis.

Application January ll, 1938, Serial No. 184,445

3 Claims.

This invention relates to improvements in wire stitching machines.

In my prior Patent No. 1,522,974, dated January 13, 1925, there isdisclosed a wire stitching machine including a horizontally disposedU-shaped member, one arm of which forms a support for the box blank, andthe other arm of which supports the stitching mechanism. This type ofstructure operates satisfactorily on box blanks of normal size. If,however, the blanks are unusually long, considering the distance fromthe top flap to the bottom flap, then there is interference from theclosed end of the U-shaped supporting arm shown in said prior patent,because said closed end prevents the blanks from projecting there beyondwhile maintaining the overlap in proper condition for stitching.

It is one of the objects of the present invention, therefore, to providea stitching machine of the same generaltype as that shown in my priorpatent above mentioned and including a box blank supporting bar and anL-shaped stitching mechanism support carrying said bar in a manner sothat the point of connection between the L-shaped member and the bar isso constructed as to accommodate a projecting portion of an unusuallylong box to permit the latter to projecting beyond said point ofconnection while a portion remote therefrom is being operated upon bythe stitching mechanism.

A more specific object of the invention is to provide a structure asabove described wherein the L-shaped member adjacent one end of whichthe stitching mechanism is supported, has one arm provided with achannel on its lower end, which channel is laterally offset from thearm, and wherein the channel is so associated with the blank supportingbar as to provide a groove within the channel above said bar, the saidgroove being adapted to accommodate one projecting edge of the box blankand the other projecting edge being adapted to pass over the offset topportion of the channel.

A further object of the invention is to provide a structure as abovedescribed including a stop gauge for the projecting portion of a longblank, and means for adjustably supporting said stop gauge beyond thepoint of connection between the L-shaped bracket member and the box-sup-I porting bar.

With the above and other objects in view, the invention consists of theimproved wire stitching machine and all its parts and combinations asset forth in the claims and all equivalents thereof.

In the accompanying drawings illustrating one complete embodiment of thepreferred form of the invention in which the same reference numeralsdesignate the same parts in all of the views:

Fig. l is a perspective view of the wire stitch 6" ing machineillustrating a gravity conveyor for box blanks to be stitched andillustrating a box blank being operated upon;

Fig. 2 is a side elevational view of the stitching device; 10

Fig. 3 is an enlarged sectional view taken on line 3-3 of Fig. 2 showinga box of major length in position on the device;

Fig. 4 is a view of one side of the structure illustrated in Fig. 3; andi Fig. 5 is a side view of the extension bar.

The numeral l designates a standard which has at its upper end anoutstanding horizontal arm. Stitching mechanism is carried by the outerend of said arm. An L-shaped bracket 20 member extends from theaforementioned horizontal arm. The stitching mechanism may include areel M of stitcher wire, from which the wire is led through a guide l6,through rollers [5 to a cutter ll, the cut section of wire beingoper-25.

ated upon in a well-known manner by a staple forming member l8 anddriver Hi to drive the staple through overlapping portions of a boxblank and clinch the same in staple form. Any

suitable form of stitching or securing mechanism 30.

may be utilized.

The other arm of the L-shaped member 2 projects downwardly and has itslower end formed with a channel 9, which channel is laterally ofisetfrom the arm as clearly shown in Fig. 3 to 35 permit an edge portion ofthe box blank to pass thereover, as will be hereinafter described ingreater detail. The channel 9 has a side opening, and within saidchannel a bar 3 is supported.

Bolts 6 extend through apertures in the closed side of the channel andare threaded into the bar as clearly shown in Fig. 3 to support the sameagainst the bottom of the channel. The channel is of such height withrespect to the width of the bar 3 as to leave a space or groove Illabove the bar 3 as clearly indicated in Fig. 3. The apertures in thechannel 9 through which the bolts 6 extend may provide sufficientclearance so that a slight adjustment in the position of the bar 3within the channel may be effected by manipulation of the set screw 1.This will in effect vary to some etxent the vertical height of thegroove I0.

An extension bar l2 may have a threaded end portion ii for. insertion inthe end of the main 5

